Bar code printing method for tire and printing equipment therefor

1. A bar code printing apparatus for a tire having a bead around an open central region, comprising: means for selectively carrying the tire in one direction, said tire carrying means including a roll conveyor; means for sensing a supply of the tire by said tire carrying means; means for stopping said tire at a predetermined position, said tire stopping means including a pneumatic cylinder and a stopper fixed on a piston rod of said pneumatic cylinder, wherein said stopper protrudes into the open central region of the tire between rollers of said roll conveyor, and the bead of the tire is caught against said stopper; means for printing a bar code on the tire stopped at said predetermined position; and a controller for automatically and consecutively controlling said means for carrying, said means for sensing, said means for stopping, and said means for printing.

2. The bar code printing apparatus according to claim 1 , wherein said bar code printing means includes a horizontal guiding shaft crossing the traveling direction of said tire at an angle of 90 and fixed to the upper portion of said tire carrying means; a first carrier movably fixed to said horizontal guiding shaft, driven by said controller, and selectively reciprocable along said horizontal guiding shaft; a vertical guiding shaft fixed to said first carrier and crossing said horizontal guiding shaft at an angle of 90 so as to be disposed relative to the traveling direction of said tire at an angle of 90 ; a second carrier movably fixed to said vertical guiding shaft, driven by said controller, and selectively reciprocable along said vertical guiding shaft; a distance sensor for measuring the distance from said tire and outputting a signal indicating the measured distance to said controller; and wherein said means for printing a bar code on said tire comprises a spray nozzle operated by said controller.